I've seen a yukon vet show on sky TV, i'm not sure if it's the one you refer to. Due to the size of the area which they 'service', and because of the terrain, they have to get everywhere by helicopter. There's a similar aussie version, and they have to use helicopter too. Good shows from what i've seen.
And
kno4te, I think you've missed a trick there. You should have been a vet instead of a doctor. Go to work in an helicopter, lol.